CN109318896A - A kind of ACC walks to stop torque monitoring control strategy - Google Patents
A kind of ACC walks to stop torque monitoring control strategy Download PDFInfo
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- CN109318896A CN109318896A CN201810971472.XA CN201810971472A CN109318896A CN 109318896 A CN109318896 A CN 109318896A CN 201810971472 A CN201810971472 A CN 201810971472A CN 109318896 A CN109318896 A CN 109318896A
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- Prior art keywords
- torque
- final demand
- actual
- vehicle
- demand torque
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/14—Adaptive cruise control
Abstract
The present invention provides a kind of ACC to walk to stop torque monitoring control strategy, comprising: obtains initial demand torque, cruise torque, ESP torque, clutch moment of torque, transmission ratio and actual torque；The state computation final demand torque for comparing the size between initial demand torque, ESP torque and cruise torque and transmission ratio and clutch moment of torque and vehicle being combined to be presently in；Compare the size of final demand torque and actual torque, and according to the control DFC failure indication module set of the hold mode of final demand torque and actual torque size relation or reset.The present invention improves torque monitoring mode when vehicle walks to stop state by introducing ESP torque；And further judged according to the size relation hold mode of actual torque and the final demand torque of driver under vehicle difference operating condition, prevent vehicle from having skidded, and delay disposal is done to monitoring signal, vehicle is eliminated since signal jumps the influence caused by drive safety, raising drive safety.
Description
Technical field
The present invention relates to vehicle manufacture fields more particularly to a kind of ACC to walk to stop torque monitoring control strategy.
Background technique
It needs to loiter or in high-speed road conditions, in order to mitigate the feeling of fatigue of driver, can allow when automobile is in
Automobile enters ACC and walks stop mode, and automobile is made to automatically keep the longitudinal driving of vehicle.But at this time in order to guarantee the safety of driver,
It needs to be monitored the vehicle torsional moment in driving procedure, to prevent driving safety problem.
Wherein torque monitoring is broadly divided into two parts: a part is mainly actual torque and driver's final demand torque
It calculates；Mainly consider other torques such as ESP (Electronic Stability Program, body electronics in this part
Systems stabilisation) and the torque intervention of clutch end etc. the amendment of actual torque value is adjusted, to meet the normally travel of automobile.
Another part is mainly compared the size of actual torque and driver's final demand torque between the two, further to sentence
Whether vehicle of cutting steam breaks down and fault-signal occurs.But since the uncertainty of road conditions, such as unexpected the jolting of automobile have
It is possible that the situation that practical instantaneous torque is bigger than driver's final demand torque generates safety so as to cause leaping up before automobile
Hidden danger.
Summary of the invention
In view of this, it is necessary to provide a kind of ACC of precisely monitoring torque to walk to stop torque monitoring control strategy.
The present invention provides a kind of ACC to walk to stop torque monitoring control strategy, comprising:
Obtain initial demand torque, cruise torque, ESP torque, clutch moment of torque, transmission ratio and actual torque；
Compare the size between initial demand torque, ESP torque and cruise torque and combines transmission ratio and clutch moment of torque
And the state computation final demand torque that vehicle is presently in；
Compare the size of final demand torque and actual torque, and according to final demand torque and actual torque size relation
Hold mode control DFC failure indication module set or reset.
Further, the step of acquisition actual torque includes:
Obtain the current torque and loss torque of automobile；
Actual torque is obtained according to the difference of the current torque of acquisition and loss torque.
Further, the state that vehicle is presently in includes idling mode and non-idle.
Further, more initial demand torque, ESP torque and cruise torque between size and combine transmission ratio and from
The step of state computation final demand torque that clutch torque and vehicle are presently in includes:
It takes the maximum value between initial demand torque, ESP torque and cruise torque divided by transmission ratio, obtains the first larger torsion
Square；
The larger value between the first high torque and clutch moment of torque is taken, the second high torque is obtained；
Final demand is calculated according to whether the first high torque and the second high torque and vehicle are in idling mode
Torque.
Further, whether calculated in idling mode according to the first high torque and the second high torque and vehicle
The step of final demand torque includes:
Judge whether vehicle is in idling mode；
If vehicle is in idling mode, idling torque is added with the second high torque, obtains the first final demand torque；
If vehicle is in non-idle, torque is compensated plus demand with the second high torque, obtaining second finally needs
Seek torque.
Further, compare the size of final demand torque and actual torque, and according to final demand torque and practical torsion
The hold mode of square size relation controls the set of DFC failure indication module or includes: the step of reset
Compare the size of final demand torque and actual torque；
If final demand torque is less than actual torque, and final demand torque is less than retention time of actual torque and is greater than the
One standard time t1 then controls DFC failure indication module set；
If final demand torque is greater than actual torque, and final demand torque is greater than retention time of actual torque and is greater than the
Two standard time t2 then control the reset of DFC failure indication module.
Further, compare the size of the first final demand torque and actual torque, and according to the first final demand torque
The set of DFC failure indication module is controlled with the hold mode of actual torque size relation or includes: the step of reset
Compare the size of the first final demand torque and actual torque；
If the first final demand torque be less than actual torque, and the first final demand torque be less than actual torque holding when
Between be greater than the first standard time t1, then control DFC failure indication module set；
If the first final demand torque be greater than actual torque, and the first final demand torque be greater than actual torque holding when
Between be greater than the second standard time t2, then control DFC failure indication module reset.
Further, compare the size of the second final demand torque and actual torque, and according to the second final demand torque
The set of DFC failure indication module is controlled with the hold mode of actual torque size relation or includes: the step of reset
Compare the size of the second final demand torque and actual torque；
If the second final demand torque be less than actual torque, and the second final demand torque be less than actual torque holding when
Between be greater than the first standard time t1, then control DFC failure indication module set；
If the second final demand torque be greater than actual torque, and the second final demand torque be greater than actual torque holding when
Between be greater than the second standard time t2, then control DFC failure indication module reset.
To sum up, the present invention passes through in the final demand torque arithmetic to driver introduces ESP torque, to improve in vehicle
Walk to stop torque monitoring mode when state；And further by judging under the different work condition states of vehicle driving actual torque and driving
The hold mode of the size relation of the final demand torque for the person of sailing is judged, prevents vehicle from having skidded, and to monitoring signal
Delay disposal is done, eliminates vehicle since signal jumps the influence caused by drive safety, raising drive safety, and this side
Case uses software algorithm, high-efficient, change is small and at low cost, control is accurate.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is that ACC provided by the invention walks the functional block diagram for stopping monitoring control strategy control；
Fig. 2 be Fig. 1 in control module judge initial demand torque, cruise torque and ESP torque between maximum value principle
Block diagram.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, the present invention is described in detail as follows.
Body electronics systems stabilisation (Electronic Stability Program, referred to as " ESP ") is to being intended to be promoted
While the manipulation performance of vehicle, it can be effectively prevented the common name that automobile reaches system or program out of control when its dynamic limit,
Its safety that can promote vehicle and handling.
As shown in Figure 1, a kind of ACC walks to stop torque monitoring control strategy comprising:
Obtain initial demand torque, cruise torque, ESP torque, clutch moment of torque, transmission ratio and actual torque；
Compare the size between initial demand torque, ESP torque and cruise torque and combines transmission ratio and clutch moment of torque
And the state computation final demand torque that vehicle is presently in；
Compare the size of final demand torque and actual torque, and according to final demand torque and actual torque size relation
Hold mode control DFC failure indication module set or reset.
I.e. the present invention is perfect to carry out to torque monitoring system by introducing ESP torque, and by series of algorithms to prison
It controls signal and carries out delay disposal, to exclude the influence for causing signal to jump due to operating condition, and then obtain better driving safety
Property.
It can be found in about the related device content of the cruise torque of cruising condition, ESP and ESP torque, clutch moment of torque
The prior art, specific details are not described herein.
In the present embodiment, control module can be according to the current torque and loss torque of acquisition to obtain actual torque, tool
Body obtain actual torque the step of include:
Obtain the current torque and loss torque of automobile；
Actual torque is obtained according to the difference of the current torque of acquisition and loss torque.
In the present invention, more initial demand torque, ESP torque and cruise torque between size and combine transmission ratio and from
The step of state computation final demand torque that clutch torque and vehicle are presently in includes:
It takes the maximum value between initial demand torque, ESP torque and cruise torque divided by transmission ratio, obtains the first larger torsion
Square；
The larger value between the first high torque and clutch moment of torque is taken, the second high torque is obtained；
Final demand is calculated according to whether the first high torque and the second high torque and vehicle are in idling mode
Torque.
Specifically, as shown in Fig. 2, provided by the invention take between final demand torque, ESP torque and cruise torque
In one specific embodiment of maximum value, specific steps include the following:
Take the larger value between final demand torque, cruise torque；
It is compared again with ESP torque, then takes the larger value.
In other specific embodiments, initial demand torque, ESP torque and cruise three torques of torque can also arbitrarily two-by-two
Compare or compare together by obtain maximum value among three etc. other etc. in a manner of, specifically with no restrictions.
Further, whether the present invention is in idling mode meter according to the first high torque and the second high torque and vehicle
Calculate final demand torque the step of include:
Judge whether vehicle is in idling mode；
If vehicle is in idling mode, idling torque is added with the second high torque, obtains the first final demand torque；
If vehicle is in non-idle, torque is compensated plus demand with the second high torque, obtaining second finally needs
Seek torque.
In the present invention, the state that vehicle is presently in includes idling mode and non-idle.And judge whether vehicle is located
It is mainly according to the flag bit for whether being in idling laid inside ECU in idling mode, particular technique can be found in the prior art,
It is specific that details are not described herein.
Further, compare final demand torque (the first final demand torque, the second final demand torque) and practical
The size of torque, and DFC failure indication module is controlled according to the hold mode of final demand torque and actual torque size relation
Set or reset the step of include:
Compare the size of final demand torque and actual torque；
If final demand torque is less than actual torque, and final demand torque is less than retention time of actual torque and is greater than the
One standard time t1 then controls DFC failure indication module set, indicates that automobile may be to turn round due to practical caused by jolting at this time
It is altered before moment ratio driver's final demand torque automobile caused greatly, generates security risk, DFC failure indication module can quote failure
To be reminded to driver；
If final demand torque is greater than actual torque, and final demand torque is greater than retention time of actual torque and is greater than the
Two standard time t2 then control the reset of DFC failure indication module, represent running car at this time and stablize, eliminate vehicle driving mistake
Influence because of the jump of both actual torque and driver's final demand torque signal to driving safety once in a while in journey.
In detail, in the case where vehicle is in idle conditions, that is, when being in idling mode, compare the first final demand torque and reality
The size of border torque, and referred to according to the first final demand torque and the hold mode control DFC failure of actual torque size relation
Show module set or includes: the step of reset
Compare the size of the first final demand torque and actual torque；
If the first final demand torque be less than actual torque, and the first final demand torque be less than actual torque holding when
Between be greater than the first standard time t1, then control DFC failure indication module set；
If the first final demand torque be greater than actual torque, and the first final demand torque be greater than actual torque holding when
Between be greater than the second standard time t2, then control DFC failure indication module reset.
And in the case where vehicle is in idle conditions, i.e., non-idle when, compare the second final demand torque and actual torque
Size, and DFC failure indication module is controlled according to the hold mode of the second final demand torque and actual torque size relation
Set or reset the step of include:
Compare the size of the second final demand torque and actual torque；
If the second final demand torque be less than actual torque, and the second final demand torque be less than actual torque holding when
Between be greater than the first standard time t1, then control DFC failure indication module set, automobile storage shows and reports in security risk at this time
It is out of order, to driver to prompt, improves drive safety；
If the second final demand torque be greater than actual torque, and the second final demand torque be greater than actual torque holding when
Between be greater than the second standard time t2, then control the reset of DFC failure indication module, vehicle is in safety traffic state, and DFC failure refers to
Show module resets and continue to be monitored the driving status of automobile, to ensure safe driving.
In conclusion the present invention passes through in the final demand torque arithmetic to driver introduces ESP torque, to improve
Vehicle walks to stop torque monitoring mode when state；And further pass through actual torque under the different work condition states for judging vehicle driving
Judge with the hold mode of the size relation of the final demand torque of driver, prevents vehicle from having skidded, and to monitoring
Signal does delay disposal, eliminates vehicle as signal jump influence caused by drive safety, improves drive safety, and
This scheme uses the prioritization scheme of software algorithm, high-efficient, change is small and at low cost, control is accurate.
More than, it is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, although this
Invention has been disclosed in a preferred embodiment above, and however, it is not intended to limit the invention, any person skilled in the art,
It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent
The equivalent embodiment of variation, but without departing from the technical solutions of the present invention, according to the technical essence of the invention to the above reality
Any simple modification, equivalent change and modification made by example are applied, all of which are still within the scope of the technical scheme of the invention.
Claims (8)
1. a kind of ACC walks to stop torque monitoring control strategy characterized by comprising
Obtain initial demand torque, cruise torque, ESP torque, clutch moment of torque, transmission ratio, actual torque；
Compare the size between initial demand torque, ESP torque and cruise torque and combine transmission ratio and clutch moment of torque and
The state computation final demand torque that vehicle is presently in；
Compare the size of final demand torque and actual torque, and according to the guarantor of final demand torque and actual torque size relation
Hold state control DFC failure indication module set or reset.
2. ACC according to claim 1 walks to stop torque monitoring control strategy, which is characterized in that the step of obtaining actual torque is wrapped
It includes:
Obtain the current torque and loss torque of automobile；
Actual torque is obtained according to the difference of the current torque of acquisition and loss torque.
3. ACC according to claim 1 walks to stop torque monitoring control strategy, which is characterized in that the state packet that vehicle is presently in
Include idling mode and non-idle.
4. ACC according to claim 3 walks to stop torque monitoring control strategy, which is characterized in that more initial demand torque, ESP
The state computation that size and combination transmission ratio and clutch moment of torque and vehicle between torque and cruise torque are presently in is most
The step of whole demand torque includes:
It takes the maximum value between initial demand torque, ESP torque and cruise torque divided by transmission ratio, obtains the first high torque；
The larger value between the first high torque and clutch moment of torque is taken, the second high torque is obtained；
Final demand torque is calculated according to whether the first high torque and the second high torque and vehicle are in idling mode.
5. ACC according to claim 4 walks to stop torque monitoring control strategy, which is characterized in that according to the first high torque and
Whether two high torques and vehicle are in the step of idling mode calculates final demand torque
Judge whether vehicle is in idling mode；
If vehicle is in idling mode, idling torque is added with the second high torque, obtains the first final demand torque；
If vehicle is in non-idle, torque is compensated plus demand with the second high torque, obtains the second final demand torsion
Square.
6. ACC according to claim 5 walks to stop torque monitoring control strategy, which is characterized in that compare final demand torque and reality
The size of border torque, and DFC indicating fault mould is controlled according to the hold mode of final demand torque and actual torque size relation
Block set or reset the step of include:
Compare the size of final demand torque and actual torque；
If final demand torque is less than actual torque, and final demand torque is less than the retention time of actual torque greater than the first mark
T1 between punctual, then control DFC failure indication module set；
If final demand torque is greater than actual torque, and final demand torque is greater than the retention time of actual torque greater than the second mark
T2 between punctual then controls the reset of DFC failure indication module.
7. ACC according to claim 6 walks to stop torque monitoring control strategy, which is characterized in that compare the first final demand torque
With the size of actual torque, and according to the hold mode of the first final demand torque and actual torque size relation control DFC therefore
Hinder indicating module set or includes: the step of reset
Compare the size of the first final demand torque and actual torque；
If the first final demand torque is less than actual torque, and the first final demand torque is big less than the retention time of actual torque
In the first standard time t1, then DFC failure indication module set is controlled；
If the first final demand torque is greater than actual torque, and the first final demand torque is big greater than the retention time of actual torque
In the second standard time t2, then the reset of DFC failure indication module is controlled.
8. ACC according to claim 6 walks to stop torque monitoring control strategy, which is characterized in that compare the second final demand torque
With the size of actual torque, and according to the hold mode of the second final demand torque and actual torque size relation control DFC therefore
Hinder indicating module set or includes: the step of reset
Compare the size of the second final demand torque and actual torque；
If the second final demand torque is less than actual torque, and the second final demand torque is big less than the retention time of actual torque
In the first standard time t1, then DFC failure indication module set is controlled；
If the second final demand torque is greater than actual torque, and the second final demand torque is big greater than the retention time of actual torque
In the second standard time t2, then the reset of DFC failure indication module is controlled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971472.XA CN109318896B (en) | 2018-08-24 | 2018-08-24 | ACC (adaptive cruise control) walking-stopping torque monitoring control strategy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971472.XA CN109318896B (en) | 2018-08-24 | 2018-08-24 | ACC (adaptive cruise control) walking-stopping torque monitoring control strategy |
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| Publication Number | Publication Date |
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| CN109318896A true CN109318896A (en) | 2019-02-12 |
| CN109318896B CN109318896B (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810971472.XA Active CN109318896B (en) | 2018-08-24 | 2018-08-24 | ACC (adaptive cruise control) walking-stopping torque monitoring control strategy |
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Cited By (1)
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| CN112537206A (en) * | 2019-09-20 | 2021-03-23 | 广州汽车集团股份有限公司 | New energy automobile torque monitoring method and system |
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| US8521377B1 (en) * | 2012-05-14 | 2013-08-27 | GM Global Technology Operations LLC | OBD compliant rationality check system for adaptive cruise control |
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| CN109318896B (en) | 2021-03-16 |
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